Name: Armenian Blackberry (Rubus armeniacus)
Other name: Himalayan blackberry
Clades: Angiosperms, Eudicots, Rosids
Description: Rubus armeniacus is a perennial plant that bears biennial stems ("canes") from the perennial root system. In its first year a new stem grows vigorously to its full length of 4–10 m, trailing along the ground or arching up to 4 m high. The stem is stout, up to 2–3 cm diameter at the base, and green. The canes can turn more red/purple if they are exposed to bright sunlight. This is common in the summer. The leaves on first year shoots are 7–20 cm long, palmately compound with either three or more commonly five leaflets. The leaflets are moderately serrated. Flowers are not produced on first year shoots. In its second year, the stem does not grow longer, but produces several side shoots, which bear smaller leaves with three leaflets (rarely a single leaflet). These leaflets are oval-acute, dark green above and pale to whitish below, with a toothed margin, and thorns along the midrib on the underside. The flowers are produced in late spring and early summer on panicles of 3–20 together on the tips of the second-year side shoots, each flower 2–2.5 cm diameter with five white or pale pink petals. The flowers are bisexual (perfect) containing both male and female reproductive structures.
Distribution: It is native to Armenia and Northern Iran, and widely naturalized elsewhere. Rubus armeniacus soon escaped from cultivation and has become an invasive species in most of the temperate world. Because it is so hard to contain, it quickly gets out of control, with birds and other animals eating the fruit and then spreading the seeds.
Dymadex's entries on plants, living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses.
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